fix(README): cleanup the prose in the README
fix(README): cleanup the prose in the README

This cleans up the prose in the README file a bit and introduces some
formatting changes.

njucslqq/etcd,yifan-gu/etcd,jefby/etcd,visheshnp/etcd,dannysauer/etcd,svdata/etcd,sayden/etcd,mwitkow/etcd,wowsoso/etcd,polvi/etcd,msanterre/etcd,sebschrader/etcd,luxas/etcd,qqsun8819/etcd,bspline/etcd,offscale/etcd,zaphod-concur/etcd,hzy001/etcd,bspline/etcd,onlyjob/etcd,xebitstudios/etcd,dnaeon/etcd,msanterre/etcd,whuwxl/etcd,etcd-io/etcd,csuideal/etcd,devfreesg/etcd,plasticbox/etcd,xychu/etcd,olark/etcd,SivagnanamCiena/etcd,philips/etcd,bakins/etcd,oscarrr110/etcd,YuleiXiao/etcd,sofuture/etcd,steveeJ/etcd,mitake/etcd,insequent/etcd,fasaxc/etcd,cognusion/etcd,bdarnell/etcd,freeloop1114/etcd,StorReduce/etcd,philips/etcd,tempbottle/etcd,dterei/etcd,a-robinson/etcd,qqsun8819/etcd,kingland/etcd,TheHippo/etcd,steveeJ/etcd,robszumski/etcd,Winslett/etcd,mqliang/etcd,Eagle-X/etcd,insionng/etcd,cchamplin/etcd,endocode/etcd,mike-lerch/etcd,xueshanf/etcd,mkumatag/etcd,fanminshi/etcd,spotify/etcd,nieanan/etcd,hongbinz/etcd,devfreesg/etcd,glevand/coreos--etcd,glensc/etcd,lzbgt/etcd,chenbaihu/etcd,nieanan/etcd,njucslqq/etcd,oscarrr110/etcd,wfxiang08/etcd,cchamplin/etcd,jeremyeder/etcd,glensc/etcd,cvik/etcd,Timer/etcd,lorneli/etcd,siddontang/etcd,linuxcer/etcd,crandles/etcd,QuantiumTechnology/etcd,mischief/etcd,ecnahc515/etcd,youxidev/etcd,ylong/etcd,fgbreel/etcd,wantonsolutions/dinv-etcd,cognusion/etcd,vimalk78/etcd,Yhgenomics/etcd,honeyqa/etcd,improbable-io/etcd,jmptrader/etcd,dalanlan/etcd,whuwxl/etcd,dterei/etcd,mkumatag/etcd,gosharplite/etcd,insionng/etcd,lumjjb/etcd,achanda/etcd,imzhulei/etcd,nkhare/etcd,cloudfoundry/etcd,yyljlyy/etcd,mwitkow-io/etcd,axingblog/etcd,pigfoot/etcd,shafreeck/etcd,gosharplite/etcd,mickep76/etcd,ajityagaty/etcd,ktateish/etcd,ajityagaty/etcd,hpcloud/etcd,westhood/etcd,junxu/etcd,chai2010-playground/etcd,hroyrh/etcd,improbable-io/etcd,mkumatag/etcd,cvik/etcd,dalanlan/etcd,jeremyeder/etcd,snailwalker/etcd,junxu/etcd,cloudfoundry/etcd,bdarnell/etcd,Eagle-X/etcd,yudai/etcd,chipironcin/etcd,openedbox/etcd,sebrandon1/etcd,joshix/etcd,ajityagaty/etcd,siddontang/etcd,axingblog/etcd,buaazp/etcd,QuantiumTechnology/etcd,cloudfoundry/etcd,crandles/etcd,kkaneda/etcd,sofuture/etcd,jmptrader/etcd,fasaxc/etcd,iamqizhao/etcd,giantswarm/etcd,mickep76/etcd,elimisteve/etcd,spotify/etcd,delkyd/etcd,tangkun75/etcd,jefby/etcd,OyTao/etcd_learning,gouyang/etcd,armstrongli/etcd,xebitstudios/etcd,barakmich/etcd,etcd-io/etcd,honeyqa/etcd,yifan-gu/etcd,svdata/etcd,insequent/etcd,youxidev/etcd,Yhgenomics/etcd,cloudfoundry/etcd,luxas/etcd,tamird/etcd,wantonsolutions/dinv-etcd,qiaochao911/etcd,lorneli/etcd,hongchaodeng/etcd,njharman/etcd,kkaneda/etcd,chenbaihu/etcd,cvik/etcd,princeqjzh/etcd,akauppi/etcd,bakins/etcd,jlamillan/etcd,cvik/etcd,handsomesun/etcd,es-chow/etcd,delkyd/etcd,ktateish/etcd,OyTao/etcd_learning,qiaochao911/etcd,wowsoso/etcd,joshix/etcd,xueshanf/etcd,jchauncey/etcd,akauppi/etcd,jonboulle/etcd,es-chow/etcd,armstrongli/etcd,sinsharat/etcd,rnaveiras/etcd,xiang90/etcd,zaphod-concur/etcd,arthurcolle/etcd,dannysauer/etcd,wfxiang08/etcd,gouyang/etcd,dnaeon/etcd,beni55/etcd,Timer/etcd,chai2010/etcd,chipironcin/etcd,li-ang/etcd,purpleidea/etcd,coreos/etcd,arthurcolle/etcd,gae123/etcd,visheshnp/etcd,onlyjob/etcd,philips/etcd,iamqizhao/etcd,Ulexus/etcd,bluebreezecf/etcd,nekto0n/etcd,gae123/etcd,chai2010-playground/etcd,gityf/etcd,mgoelzer/etcd-fork2,gtank/etcd,TheHippo/etcd,CrazyJvm/etcd,asim/etcd,sebschrader/etcd,HideoYamauchi/etcd,mitake/etcd,SivagnanamCiena/etcd,mwitkow/etcd,ylong/etcd,justintung/etcd,xiang90/etcd,fgbreel/etcd,pauldallen/etcd,combk8s/etcd,swingbach/etcd,gtank/etcd,tguangch/etcd,spotify/etcd,jravetch/etcd,shafreeck/etcd,spotify/etcd,combk8s/etcd,buaazp/etcd,yyljlyy/etcd,gyuho/etcd,tamird/etcd,rnaveiras/etcd,hzy001/etcd,tangkun75/etcd,achanda/etcd,csuideal/etcd,jlamillan/etcd,hroyrh/etcd,mqliang/etcd,ravigadde/etcd,sebrandon1/etcd,heyitsanthony/etcd,xychu/etcd,elimisteve/etcd,giantswarm/etcd,YuleiXiao/etcd,barakmich/etcd,mike-lerch/etcd,spacejam/etcd,swingbach/etcd,betawaffle/etcd,wantonsolutions/dinv-etcd,sinsharat/etcd,raoofm/etcd,gyuho/etcd,rnaveiras/etcd,lumjjb/etcd,beni55/etcd,glycerine/etcd,xdlinear/etcd,Winslett/etcd,mwitkow-io/etcd,plasticbox/etcd,olark/etcd,yudai/etcd,pengzj/etcd,openedbox/etcd,mqliang/etcd,ravigadde/etcd,rchicoli/etcd,a-robinson/etcd,betawaffle/etcd,cockroachdb/etcd,asim/etcd,imzhulei/etcd,polvi/etcd,rchicoli/etcd,hongbinz/etcd,ecnahc515/etcd,pauldallen/etcd,tguangch/etcd,westhood/etcd,justintung/etcd,mgoelzer/etcd-fork2,handsomesun/etcd,njharman/etcd,shawnps/etcd,yichengq/etcd,hongchaodeng/etcd,tempbottle/etcd,shakefu/etcd,jonboulle/etcd,heyitsanthony/etcd,Ulexus/etcd,cockroachdb/etcd,jravetch/etcd,yichengq/etcd,CrazyJvm/etcd,shawnps/etcd,nkhare/etcd,HideoYamauchi/etcd,sayden/etcd,offscale/etcd,glycerine/etcd,coreos/etcd,jchauncey/etcd,Ulexus/etcd,li-ang/etcd,robszumski/etcd,xdlinear/etcd,spacejam/etcd,etcd-io/etcd,pengzj/etcd,purpleidea/etcd,bluebreezecf/etcd,shakefu/etcd,lzbgt/etcd,StorReduce/etcd,kingland/etcd,mischief/etcd,nekto0n/etcd,freeloop1114/etcd,gityf/etcd,fasaxc/etcd,glevand/coreos--etcd,endocode/etcd,vimalk78/etcd,fanminshi/etcd,raoofm/etcd,hpcloud/etcd,Ulexus/etcd,chai2010/etcd,snailwalker/etcd,linuxcer/etcd,princeqjzh/etcd